Railroad-crossing construction.



H.y H. COLLINS. RAILROAD CROSSING CONSTRUCTON.

APPLlcATloN man DEc.21,1911.

Patented Feb. i9, M

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. ties are raised approximately one-halt' inch UNITED STATES itTENToEEToE. I

HENRY HENDERSON COLLINS, OF JOHNSON CITY, TENNESSEE, ASSIGNOR OFONE-HALF TO HARRY DAVID GUMP, OF JOHNSON CITY, TENNESSEE.

RAILROAD-CROSSING CONSTRUCTION.

-To all whom t may concern:

Be it known that I, HENRY HENDERSON COLLINS, a citizen of the UnitedStates, and a resident of Johnson City, in the county of WVashington andState of Tennessee, have invented certain new and useful Improvementsin, Railroad-Crossing Constructions, of which the following is aspecification.

My invention is an improvement in railroad crossing constructions, andhas for its object to provide a crossing of the character specified thatwill not harden and crack during cold weather nor .become too soft inwarm weather, and will maintain' approximately the saine degree ofelasticity at all times, with enough resiliency to overcome all shockand jar of passing trains, and will afford a waterproof cover or envelopfor all the parts ot' the crossing, preserving the ties from decay andpreventing the loosening ot' bolts and nuts.

In the drawings:

Itigure 1 is a transverse vertical section through the crossing; and

yFig. 2 is a section on the line 2 2 of Fig. 1, looking in the directionot' the arrows adjacent to the line. i

In preparing the improved crossing construction, the road.b` ed is cutaway between the ties, and below ,the ties for approximately a haltnich, 1n such manner .that the .from the ballast which may be of anydesired character. r---A--t'oiairisethelnplagtl about the crosslng,

lilled in between the ties and at each end ot' the saine to the level olthe bottoms of the rails, the said lilling` being indieated at 2. Aninch ol boiling asphalt, indicated at 3, is then poured upon the lilling2, and over the tops ol the ties', and the said asphalt is also arrangedat the ends and sides of the.

forni, so that the filling 2 is entirely inclosed by a easing of pureasphalt and fluxing oil.

Specification of Letters Patent.

A halt inch ofl boiling Patented Feb. 19, 1918.

Application led December 27, 1917. Serial N o. 209,169.

It will be noticed that the filling 2 is a. trifle below the upper facesof the ties, so that the coating 3 ot' asphalt will be slightly belowthe level of the upper faces ot' the ties between the same. The saidcoating also covers the rail bases of the rails. This construction formsa solid bloeli, which, when cooled, is waterproof, excluding all waterfrom the ties and ballast, and atl'ording a dry, solid base, of twicethebearing surface ordinarily obtained with the pre t method of,installation with dry ballast crushed stone and having the further a(mtage of being elastic and resilient.

In order to bring'the surface to the level of the rails, the spacebetween the rails and at the outer sides ot' the rails above` thecoating 3 is filled with the saine mixture 0f stone and asphalt as isplaced Iwithin the casing, the said illing being indicated at 4. Thislilling 1 is covered with a coating of clean, dry sand or very smallcrushed stone, and outside of the rails the filling is inclineddownwardly as indicated at 5. Grooves 6 are also provided at the innersides ofthe rails T for the flanges ot' the wheels.

A crossing put in in this manner w ill preserve the ties and preventrust o't' the steel parts. \Vhen the rails become worn and must berenewed, the base and ties need not bedisturbed, and in ease new steelis put in onliY the top eoat to the depth of the rail nuls-t be renewed.

I claim:

l.. A railroad crossing comprising a casing ot' pure asphalt and tluxingoil filled with niixed stone and asphalt, said easing inclosing the tiesand extending above the base [langes ot the rails` and a tilling ofasphalt and stone between the rails and outside of `the rails above thesaid easing.

Il ENR Y HENDERSON COLLINS.

Witnesses z R. L. DEER', lV. 11. FAIR.

